Tractor rim



Oct. 22, 1929. P. A. JCHNSON 1,732,517

TRACTOR RIM Filed Aug. 11 1928 2 Sheets-Sheet 1 file/"A Joluzson/abtoxmu Oct. 22, 1929. l P. A. JOHNSON 1,732,517

TRACTOR RIM Filed Aug. 11, 1928 2 Sheets-Sheet 2 1792604 (Ia/1115010amen 1M awn/1401 Patented Get. 22, 1929 UWETED STATES PATENT OFFEQEPETER A. JOHNSON, ()1? STOUGHTON, WISCONSIN, ASSIG-NOR OF GNEJ IALF TOHENRY NORRIS KLONGLAND, OF STOUGI-ITON, NISCDNSIN 'rnnoron RIMApplication filed August 11, 1928.

This invention aims to provide a novel means for attaching an auxiliaryrim to the main rim oi a tractor wheel, thereby to broaden the rim andincrease the efl iciency thereof.

It is within the province of the disclosure to improve generally and toenhance the utility of devices of that type to which the inventionappertains.

With the above and other objects in view which will appear as thedescription proceedsythe invention resides in the combination andarrangement of parts and in the details of construction hereinatl'terdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, may be made within thescope of what is claimed, without departing from the spirit of theinvention.

In the accompanying drawings Figure 1 shows in plan, a wheel to whichhas been attached the device forming the subject matter or thisapplication;

Figure 2 is a side elevation;

Figure 3 is a section on the line 33 oil Figure 2;

Figure t is a section on the line 4t4 of Figure 3;

Figures 5 and 6 are plan views illustrating modifications.

lleterring to the form shown in Figures 1 to l, there appears a maintractor wheel 1 including a rim 2 having an inwardly extended flange 3,the spokes being shown at 4, and the axle of the wheel appearing at 5.The rim 2 has traction cleats 6 which are disposed acute-- lv to thedraft line. The numeral 7 desigan auxiliary rim having cleats 8, theends of which are inclined as shown at 9, to engage with the ends of thecleats 6 on the rim of the main wheel.

It is not necessary, however, that the ends 9 oi. the cleats 8 beinclined, as shown in Figure 1. Thus, in Figure 5, the rim of the mainwheel is shown at 10 and the cleats at 11. The auxiliary rim appears at12, and its cleats 14; are straight, the cleats 14 extending beyond therim 12, and overlapping the cleats 11 on the rim 10, as shown at 15.Sometimes the cleats on the main rim may be mere lugs,

operate with the cl Serial No. 299,031.

as shown in F igure 6. In that figure, the cleats appear at 16 and themain rim is designated by the numeral 17. The auz-dliarv rim is markedby the numeral 18 and has cleats 19, the ends 20 of which are inclined,and engaged with the lugs or cleats 16. In general, the cleats on theauxiliary rim are constructed in any desired way, so that they willcoeats on the main rim. As indicated in Figure l, for instance, theauxiliary rim 7 is disposed in the same plane with the main rim 2.

Securing elements 21, such as bolts, are arranged at oppositely disposedpoints on the auxiliary rim 7. There may be as many oi these securingelements 21, and parts carried thereby, as the manuitaeturer considersexpedient. On the inner end of each securing element 21 there is a head22, which may be a washer held in place by the nut 23 on the bolt.

An arm 24 is mounted on the securing element E21, the arm 2% being inthe form of a rigid strap, having an angle 25 intermediate its ends, theconstruction being such that one end 26 of the arm will rest against theinner surface of the auxiliary rim 7, whereas the opposite end 27 of thearm will incline away from the auxiliary rim, as clearly shown in Figure2 of the drawings.

In the end 27 of the arm 24 there is a slot 28 which is elongatedcircumferentially oi' the wheel. In the slot 28 is disposed a securingelement 29, such as a nut and bolt, shown clearly in Figure l of thedrawings. Tl e numeral 30 designates a hook-shaped bracket engaged withthe flange 3 of the main rim 2. The bracket 30 has a base 31, throughwhich the securing element- 29 passes, and the base 31 is provided atits inner end with a rectangularly disposed flange 82 which is parallelto the inner part oi the hook 230, as shown in Figure 4: of thedrawings. The end 27 of the arm 24 fits closely between the inner partof the bracket 80 and the flange 32 as shown in Figure 4 of thedrawings.

In practical operation, the securing element 29 is slid in the slot 28until the bracket 30 is up against one side of one of the spokes 4, asshown in Figure 3.

Then the securing element 29 is tightened up. This operation aids inholding the auxiliary rim 7 in place against circumferential movement,especially when the tractor wheel is reversely rotated. Because the ends9 of the cleats 8 on the auxiliary rim overlap the ends of. the cleats 6on the main rim 2, the

rims are connected securely for simultaneous rotation, and the effectivewidth of the track wheel is broadened to its obvious advantage.

A compression spring 33 is mounted on the securing element 21 betweenthe head 22 and the part 26 of the arm 24. The function of the spring 83is to hold down the end 26 of the arm 24 on the rim 7, and to cause theinclined end 27 on the rim 7 to bear on the base 31 0f the bracket 30and keep the bracket engaged with the flange 3 of the rim 2 on the mainwheel 1, as shown in Figure 1 of the drawings, it being obvious thatwhen the hook shaped brackets 30 are engaged with the flange 3, theauxiliary rim will be held on the main rim against lateral separation.

An angle member 34 is secured at 35 to the arm 24, and is rotatedbetween the securing elements 21 and 29. One end of the angle member 34extends between the inner edge of the arm 24 and the flange 3, to serveas a spacer and reinforcement.

Having thus described the invention, what is claimed is:-

1. In a device of the class described, an auxiliary rim, a hook shapedbracket projecting laterally beyond the auxiliary rim, and spring meansfor forcing the bracket toward the auxiliary rim, thereby to cause thebracket to engage with a main rim and to keep the auxillary rimassembled with the main'rim.

2. In a device of the class described, an

auxiliary rim, an arm extended longitudinally of the rim, a membercarried by the arm for engaging a main rim, and spring means foroperating the arm to cause said member to engage with a main rim.

3. In a device of the class described, an auxiliary rim, an arm extendedlongitudinally of the auxiliary rim, a coupling bracket,

means for mounting the bracket on the arm for adjustment longitudinallyof the arm, and spring means for holding the arm yieldingly on theauxiliary member.

In testimony that I claim the foregoing as V my own, I have heretoafiixed my signature. 55

PETER A. JOHNSON.

